Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
  • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
  • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
  • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement

Definitions

• the present invention relates in particular to a rotating electrical machine, in particular a starter motor vehicle.
• a motor vehicle starter comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support comprising a passage arranged to allow the launcher assembly to come into contact with the ring gear.
• This support has a substantially ogival shape and, as a result, pollutants, liquid or solid, for example water or mud, are projected on the inside of the support by the crown, and deflected backwards. starter because of the ogival shape of the support. These pollutants are then likely to infiltrate the starter motor and / or the contactor, which can lead to malfunctions.
• the invention aims in particular to reduce these projections of pollutants to the rear of the starter.
• the invention thus relates to a rotating electric machine for a motor vehicle, in particular a motor vehicle starter, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate discharge aperture of the launcher assembly; passage, this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly.
• the invention thus makes it possible to substantially limit the projections of pollutants towards the rear of the starter by eliminating on the support, faces that would act as a deflector. This protects the different components of the starter, and increase its life.
• the invention thus privileges, on the starter, the return and immediate evacuation of pollutants, rather than sealing to protect the rear of the starter. This sealing by added joints can be expensive and complex to achieve.
• the opening is arranged, when the machine is mounted on a motor vehicle, substantially in an upper half of the support.
• the evacuation through the opening thus arranged allows to evacuate the projections of pollutants, without the need for evacuation by gravity. This can make it possible to overcome a specific gravity evacuation hole.
• the opening is substantially in front of the passage of the support, in particular of the crown, which makes it possible to effectively evacuate the projected pollutants.
• the opening has an area substantially between 100 mm2 and 500 mm2, in particular between 150 mm2 and 400 mm2.
• the support comprises two separate discharge openings of the passage and arranged to allow, when the machine is mounted on a motor vehicle, the discharge of pollutants projected by the crown.
• the two openings have different areas. If desired, one of the openings has an area at least twice as large as the other opening.
• the two openings are arranged in the same half of the support, in particular the upper half.
• the two openings are spaced apart for example by an angle less than 20 °, in particular less than 10 °.
• the support comprises a substantially frustoconical wall and the opening or openings are formed on this substantially frustoconical wall.
• the starter assembly may comprise a drive element formed by a gear element and intended to engage the crown in a first position, the gear element being partially opposite the opening, in this first position.
• the assembly effectively evacuates the pollutants projected by the gear element, especially when it is engaged on the crown.
• the launcher assembly is arranged to be able to move between a first position in which the launcher assembly cooperates with the crown, and a second position in which the launcher assembly is disengaged from the crown.
• the machine comprises an electric motor arranged to drive the launcher assembly in rotation, and the machine is devoid of seal making a sealed separation between the support and the electric motor.
• the launcher assembly is preferably axially movable or, alternatively, be arranged to allow permanent meshing with the crown.
• the electric machine according to the invention can be arranged to operate at a maximum power of between 500 W and 4000 W for example.
• the machine can, if desired, be a reinforced starter with high starting cycles, used to perform a function of automatic restart or Stop-Start in English.
• the subject of the invention is also a rotary electric machine of a motor vehicle, in particular a starter of a motor vehicle, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox, a support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate escape opening from the passage this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the launcher assembly comprising a drive member formed by a gear member and adapted to engage the ring gear in a first position, the gear member being partially facing the opening, in that first position .
• the subject of the invention is also a rotary electric machine of a motor vehicle, in particular a starter of a motor vehicle, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate escape opening from the passage this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the launcher assembly being arranged to move between a first position in which the launcher assembly cooperates with the crown, and a second position in which the launcher assembly is disengaged from the crown,
• the launcher assembly comprising a drive member formed by a gear member and adapted to engage the crown
• the invention also relates to a rotating electric machine for a motor vehicle, in particular a motor vehicle starter, comprising:
• a launcher assembly arranged to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate escape opening from the passage this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the support having two separate discharge openings of the passage and arranged to allow, when the machine is mounted on a motor vehicle, the discharge of pollutants projected by the crown,
• the two openings having different areas.
• the invention also relates to a rotating electric machine for a motor vehicle, in particular a motor vehicle starter, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate escape opening from the passage this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the invention also relates to a rotating electric machine for a motor vehicle, in particular a motor vehicle starter, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate escape opening from the passage this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the machine comprising an electric motor arranged to drive the launcher assembly in rotation, and the machine being devoid of seal making a sealed separation between the support and the electric motor.
• the invention finally relates to a rotating electric machine of a motor vehicle, in particular a motor vehicle starter, comprising:
• a launcher assembly arranged to be able to rotate a crown associated with a combustion engine or a gearbox
• this support in which the launcher assembly is housed at least partially, this support comprising a passage arranged to allow the launcher assembly to be brought into contact with the crown, this support also comprising at least one separate discharge aperture of the launcher assembly; passage, this opening being arranged to allow, when the machine is mounted on a motor vehicle, an evacuation of pollutants projected by the crown and / or the launcher assembly,
• the machine being a reinforced starter.
• FIG. 4 is a diagrammatic and partial perspective view of the starter support of FIG. 1, and
• FIG. 5 illustrates, schematically and partially in section, the path of the pollutants projected inside the support.
• FIG. 1 shows very schematically a starter 1 for a combustion engine of a motor vehicle.
• This DC starter 1 comprises an electric motor 100 provided, on the one hand, with a rotor 2, also called an armature, rotatable about an axis X, and on the other hand, a stator 3, also called an inductor , around the rotor 2.
• This stator 3 comprises a yoke 4 carrying a magnetized structure 5 with permanent magnetization. If desired, the magnetized structure 5 may be replaced by an electrical coil.
• the rotor 2 comprises a rotor body 7 and a winding 8 wound in notches of the rotor body 7.
• the rotating electrical machine formed by the starter 1 is six-pole type. Of course, other types of machine can be provided.
• the winding 8 forms, on either side of the rotor body 7, a front bun
• the rotor 2 is provided, at the rear, with a collector 12 comprising a plurality of contact pieces electrically connected to the conductive elements, formed in the example in question by wires, of the winding 8.
• a group of brushes 13 and 14 is provided for the power supply of the winding 8, one of the brushes 13 being connected to the ground of the starter 1 and another brushes 14 being connected to an electrical terminal 15 of a switch 17 via a wire 16.
• the brushes are for example four in number.
• the brushes 13 and 14 rub against the collector 12 when the rotor 2 is rotating, allowing the rotor 2 to be powered by switching the electric current in sections of the rotor 2.
• the starter 1 further comprises a launcher assembly 19 slidably mounted on a drive shaft 18 and drivable in rotation about the X axis by the rotor 2.
• a gear reduction unit 20 is interposed between the rotor 2 and the drive shaft 18, in a manner known per se.
• the starter 1 may be of the 'Direct Drive' type, without a gearbox.
• the launcher assembly 19 comprises a drive element formed by a pinion 21 and intended to engage on a drive member of the combustion engine.
• This drive member is, in the example described, a ring 101.
• Pinion 21 may be replaced by another type of gear element.
• the launcher assembly 19 further comprises a freewheel 22 and a pulley washer 23 defining between them a groove 24 for receiving the end 25 of a fork 27.
• This fork 27 is made for example by molding a plastic material.
• the fork 27 is actuated by the switch 17 to move the launcher assembly 19 relative to the drive shaft 18, along the X axis, between a first position in which the launcher assembly 19 drives the combustion engine by intermediate pinion 21, and a second position in which the launcher assembly 19 is disengaged from the combustion engine.
• the switch 17 comprises, in addition to the terminal 15 connected to the brush 14, a terminal 29 connected via an electrical connection element, in particular a wire 30, to a power supply of the vehicle, in particular a battery.
• the starter comprises a support 35 in which is housed at least partially the launcher assembly 19, the support 35 having a passage 36 arranged to allow contacting of all thrower 19 with crown 101.
• This support 35 comprises at the front a housing 37 for receiving the front end of the shaft 18.
• this support 35 furthermore has two discharge openings 40 and 41 that are distinct from the passage 36 and arranged so as to allow, when the machine is mounted on a motor vehicle, the evacuation of pollutants projected by the crown 101 and / or the launcher assembly 19.
• the openings 40 and 41 are arranged, when the machine is mounted on a motor vehicle, substantially in an upper half of the support 35.
• the opening 40 is substantially opposite the passage 36 of the support, which effectively evacuate the projected pollutants.
• the openings 40 and 41 have an area substantially between 100 mm 2 and 500 mm 2, in particular between 150 mm 2 and 400 mm 2.
• the aperture 40 has an area of about 385mm2 and the aperture 41 has an area of about 175mm2.
• the two openings 40 and 41 have different areas.
• the two openings 40 and 41 are arranged in the same half of the support 35.
• the two openings 40 and 41 are spaced apart for example by an angle of less than 20 °, in particular less than 10 °.
• the support 35 comprises a wall 42 of substantially frustoconical shape and the openings 40 and 41 are formed on this substantially frustoconical wall 42.
• the pinion 21 is partially opposite the openings 40 and 41.
• the pinion 21 is recessed, in the direction of the X axis, the openings 40 and 41.
• the invention thus makes it possible to limit the projections of pollutants towards the rear of the starter by eliminating on the support 35 faces that act as deflectors. This protects the different components of the starter, and increase its life.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Motor Or Generator Frames (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49667388

Family Applications (1)

Country Status (4)

Citations (3)

Family Cites Families (6)

• 2013
  • 2013-09-12 FR FR1358797A patent/FR3010457B1/fr active Active
• 2014
  • 2014-08-19 WO PCT/FR2014/052101 patent/WO2015036672A2/fr active Application Filing
  • 2014-08-19 EP EP14792530.9A patent/EP3044454A2/fr not_active Withdrawn
  • 2014-08-19 JP JP2016542347A patent/JP2016535202A/ja active Pending

Patent Citations (3)

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