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
  • F02N15/067—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 the starter comprising an electro-magnetically actuated lever
• • 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
  • F02N15/062—Starter drives
  • F02N15/063—Starter drives with resilient shock absorbers
• • 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
  • F02N2015/061—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 said axial displacement being limited, e.g. by using a stopper

Definitions

• drives are used, which are fed with a separate from the fuel supply power supply.
• Most DC motors are used for this purpose, the drive ratchet is first engaged in the ring gear of the internal combustion engine, then to spin the engine. This happens, for example, by means of starting devices which operate in accordance with the push-screw drive principle. After the end of the starting process, the pinion moves back out of the ring gear of the internal combustion engine.
• start-stop systems in motor vehicles requires an extended requirement for the starting system and thus also a functionality for expanding previously used starters.
• sharper acoustic requirements are to be mentioned, as well as the need to be able to start at any time when the driver wants to start again ("Mind-Change" functionality).
• Mind-Change functionality
• the starter can be enabled to engage in the sprocket already during the outflow of the internal combustion engine, so that the above-mentioned functionality is fulfilled.
• DE 101 24 506 A1 relates to a starter for a motor vehicle.
• the starter comprises a hollow housing, a magnet arranged parallel thereto, a magnetic Switch containing engagement relay, a rotatably mounted in a transition region between the hollow housing and engagement relay engagement lever for the coupling of the starter motor to the internal combustion engine.
• the seal is formed by a rubber membrane connected to the housing walls within the transition region between the hollow housing and the engagement relay.
• DE 10 2009 026 593.7 relates to a method for the mechanical synchronization of two rotating off-axis spur gears and to a machine, in particular an electric starting device.
• This comprises a spur gear, in particular designed as starter pinion, which cooperates with a drive plate, which is arranged on one axial side of the spur gear. This is remote from a lifting means of the spur gear, wherein the drive plate relative to the spur gear is limited rotation. As a result, tooth gaps of the spur gear are closed.
• a damping device on a drive shaft of an electric machine having a starting pinion, in particular a starting device for motor vehicles.
• the damping device causes a reduction in energy of the driven during actuation of the contactor via a driver or a fork or the like in the axial direction Andrehritzels when it stops against a réellestotted on the output shaft stop ring.
• the starting device proposed according to the invention may be either a freely ejecting starting device or else one in which the starting pinion is enclosed by a part of the housing and the starting pinion is not fully exposed in the state engaged in a ring gear of the internal combustion engine.
• the inventively proposed damping device sets the otherwise occurring impact noise of the engaging Andrehritzels to the stop ring drastically down, since the impact speed of Andrehritzels, because this is operated with a relatively high pulse, on the stop ring considerably lieth lessened and thus a hard metallic contact is avoided ,
• the inventively proposed damping device can be done on the one hand by a flywheel on the output shaft or fixed gelag siege wave disk in the manner of a plate spring, which is curved so that their curvature of the abutting stop ring end face of the Andrehritzels contrary.
• the stop ring itself can be mounted via a ring, in particular a snap ring in a groove or a groove in the jacket of the output shaft.
• the stop ring can be configured such that it forms the ring, in particular as
• Snap ring surrounds on both sides, so that the stop ring is fixed in its axial position on the output shaft.
• the stop ring it is also possible to design the stop ring in such a way that it depends on a bearing, in particular the drive-side bearing (A-bearing) of the housing of the starting device of the electric machine, in particular a starting device, by means of a helical or spiral spring or the like supported.
• the Coil spring adjusts the stop ring to the snap ring, on the other hand surrounds the stop ring the ring, especially designed as a snap ring, only partially, so that the stop ring slightly springs back on contact with the engaging bevel pin, biased by the spiral or coil spring and thus degrades the impact impulse , In this embodiment of the stop ring this is displaceable in its axial position on the output shaft and not fixed in its axial position.
• the stop ring can also be mounted by means of a ring having elastic properties in a recess of a depression or a groove in the jacket of the output shaft.
• the rigidity of this bearing can be adjusted by the properties of the plastic material, from which the elastic properties, the stop ring fixing ring is made. Due to the elasticity of the plastic material movement of the stop ring in both axial directions is possible.
• a spring assembly such as
• damping measures can not be taken exclusively on the stop ring;
• the starter pinion in particular at its the stop ring zu josder end face, i. the impingement front, to take damping measures.
• the starter pinion can have an inserted disc spring, which points to the end face of the pinion pinion facing the engaging pinch pinion
• Stop ring impinges. As a first contact between the clar Wegenden Andrehritzel and the stop ring on the diaphragm spring, this is plastically deformed before impingement of the entire face of the Andrehritzels, which can also achieve an energy dissipation and thus a reduction of the noise occurring.
• a plastic disc or a package made of different plastic discs it is possible to arrange at the end face of the Andrehritzels, which is opposite the stop ring, a plastic disc or a package made of different plastic discs to arrange in a recess on the front side of the Andrehritzels.
• materials for the plastic discs for example, PA with different hardness, rubber, elastomer, thermoplastics, TPE have proven that have a hardness between 10 and 70 Shore.
• a plastic disk package of several mutually vulcanized disks of different material and different hardness so that the operating conditions occurring by appropriate interpretation of the springs and appropriate selection of plastic sheets to be combined can be taken into account.
• FIG. 3 shows a further embodiment variant of the damping device proposed according to the invention with a stop ring attached via a spring
• FIG. 4 shows an elastic mounting of the stop ring on the output shaft
• Figure 6 is a starter pinion with a plate spring, which is embedded in the stop ring assigning the end face of the Andrehritzels and
• Figure 7 is a starter pinion on whose the stop ring zu josder end face a plastic disc is provided.
• FIG. 1 shows a starting device in a longitudinal section.
• FIG. 1 shows a starting device 10. This is designed as a starting device in which the starting pinion is still surrounded by a part of the housing of the starting device.
• the following explanations also apply to a freely ejecting starter, i. at a starting device in which the starting pinion is fully exposed after pressing the engagement relay.
• the starting device 10 shown in FIG. 1 has, for example, a starter motor 13 and an engagement relay 16.
• the starter motor 13 and the engagement relay 16 are attached to a common drive bearing plate 19.
• the starter motor 13 serves to drive a starter pinion 22 when it is meshed in the ring gear, the internal combustion engine, not shown here.
• the starter motor 13 has a pole tube as a housing 28, which carries on its inner circumference pole pieces 31, which are each wrapped by a field winding 34.
• the pole shoes 31 in turn surround an armature 37, which has an armature packet 43 constructed from fins 40 and an armature winding 49 arranged in grooves 46.
• the armature package 43 is pressed onto a drive shaft 44.
• a commutator 52 which is constructed among other things from individual commutator fins 55, is attached to the end of the drive shaft 44 facing away from the starting pinion 22.
• the commutator fins 55 are electrically connected in a known manner to the armature winding 49 in such a way that, in the case of tion of commutator blades 55 by carbon brushes 58 results in a rotational movement of the armature 37 in the pole tube 38.
• a arranged between the contactor 16 and the starter motor 13 power supply 61 supplies in the on state, both the carbon brushes 58 and the field winding 34 with power.
• the drive shaft 44 is commutator side with a shaft journal 64 in one
• the armature 37 is adjoined by a sun gear 80, which is part of a planetary gear 83.
• the sun gear 80 is surrounded by a plurality of planet gears 86, usually three planet wheels 86, which are supported on axle journals 92 by means of rolling bearings 89.
• the planet gears 86 roll in a ring gear 95, which is mounted outside in the pole tube 28.
• the planet wheels 86 are adjoined by a planetary carrier 98, in which the axle journals 92 are accommodated.
• the planet carrier 98 is again stored in an intermediate bearing 101 and a slide bearing 104 arranged therein.
• the intermediate bearing 101 is designed cup-shaped, that in this both the planetary carrier 98 and the planet gears 86 are added.
• the ring gear 95 is arranged, which is ultimately closed by a cover 107 relative to the armature 37.
• the intermediate bearing 101 is supported with its outer circumference on the inside of the pole tube 28.
• the armature 37 has on the end facing away from the commutator 52 end of the drive shaft 44 a further shaft journal 1 10, which is also received in a sliding bearing 1 16.
• the sliding bearing 1 13 is received in a central bore of the planet carrier 98.
• the Planetenträ- ger 98 is integrally connected to the output shaft 1 16.
• the output shaft 1 16 is supported with its end facing away from the intermediate bearing 101 end 1 19 in a further bearing 122 of the drive-side bearing (A-bearing).
• the output shaft 116 is divided into several sections.
• the section located in the sliding bearing 104 of the intermediate bearing 101 is followed by a straight-line section 125 (internal gear), which is part of a shaft-hub connection.
• This shaft-hub connection 128 in this case allows the axial linear slide of a driver 131.
• the driver 131 is a sleeve-like extension which is integral with a cup-shaped outer ring 132 of the freewheel 137.
• the freewheel 137 (Richtgesperre) further consists of an inner ring 140 which is disposed radially within the outer ring 132. Between the inner ring 140 and the outer ring 132, the clamping body 138 are arranged.
• Clamping members 138 in cooperation with the inner and outer rings, prevent relative rotation between the outer ring and the inner ring in a second direction.
• the freewheel 137 thus allows a relative movement between inner ring 140 and outer ring 132 only in one direction.
• the inner ring 140 is made in one piece with the starter pinion 22 and its helical toothing 143 (external helical toothing).
• the engagement relay 16 has a bolt 150, which is an electrical contact and which is connected to the positive terminal of an electric starter battery, which is not shown here.
• This bolt 150 is passed through a relay cover 153.
• the relay cover 153 terminates a relay housing 156, which is secured by means of a plurality of fasteners 159, such as screws on the drive end plate 19.
• a pull-in winding 162 and a holding winding 165 are furthermore arranged in the engagement relay 16.
• Feed winding 162 and the holding coil 165 both cause each in the on state an electromagnetic field which flows through both the relay housing 156 (made of electromagnetically conductive material), a linearly movable armature 168 and an armature return 171.
• the armature 168 carries a push rod 174, which is moved in the direction of linear retraction of the armature 168 in the direction of a switching pin 177.
• This lever 190 usually designed as a fork lever, surrounds with two "tines" not shown here on its outer circumference two discs 193 and 194 to move a trapped between these driver ring 197 for freewheel 137 towards the resistance of the spring 200 and thereby the starter pinion 22 technicallyspuren in the ring gear 25.
• a part of the damping device proposed according to the invention is located on the output shaft 16, associated with the starting pinion 22 to be engaged.
• a stop ring 214 is indicated by reference numeral 214, which is opposite to the on the output shaft 1 16 slidably arranged starter pinion.
• FIG. 2 shows a first embodiment variant of the damping device proposed according to the invention.
• the stop ring 214 is fixed by means of a ring 212 on a lateral surface 220 of the output shaft 1 16 stationary.
• the ring 212 is in particular a snap ring, which is formed in a correspondingly configured recess 210 in the lateral surface 220 of the output shaft 16.
• closed formed receiving space 242 is formed so that the stop ring 214 is seated in a defined position on the lateral surface 220 of the output shaft 1 16.
• the stop ring 214 comprises a first end face 216 and a second end face 218. In the embodiment variant shown in FIG.
• a wave washer 226 of the damping device proposed according to the invention is set in the adjustment direction 228 against the first end face 216 of the stop ring 214.
• the wave washer 226, for its part, is curved, for example, so that a sufficient spring travel is available in order to reduce a pulse which originates from a starting direction 222 of the starting pinion 22 (not shown in FIG. 2), in particular to cushion it.
• the wave washer 226 may be floatingly supported with respect to the outer surface 220 of the output shaft 16.
• a plurality of wave washers can also be positioned in the adjustment direction 228 on the end face of the stop ring 214 facing the spur gear 22 in the manner of a cup spring package.
• FIG. 3 shows a further embodiment variant of the damping device proposed according to the invention for a machine, in particular an electric starter device. Figure 3 it can be seen that in this embodiment of the stop ring
• the stop ring 214 is also fixed by means of a ring 212, in particular a snap ring, on the lateral surface 220 of the output shaft 216.
• the stop ring 214 comprises the already mentioned in Figure 2 first end face 216 and the second end face 218.
• the receiving space 242 of the stop ring 214 with respect to the first end face 216 is only partially closed. This means that when striking or when starting of the spur gear, not shown in Figure 3, in particular the Andrehritzels an electric starting device 10, the stop ring 214, acted upon by a spring element 224, in the axial direction with respect to a bearing 122 of the starting device 10 moves back and thus breaking down the momentum.
• the spring element 224 is supported on the one hand on the second end face 218 of the stop ring 214 and on the other hand on the bearing 122, in particular on the drive-side thrust bearing of the starter device 10.
• a helical or spiral spring shown in FIG. 3 it is also possible to use a plurality of springs which have different spring stiffnesses and spring turns.
• the screw or coil springs 224 shown in Figure 3 and disc springs or plate spring packets oriented in the same direction or in opposite directions between the second end face 218 of the stop ring 214 and the bearing 122 of the starter 10 can be arranged.
• the momentum of the starting pinion 222 impinging upon the stop ring 214 in the approach direction 222 is damped by yielding the axial ring 214 prestressed on the at least one spring element 224, whereby the noise development is drastically reduced and the energy of the engaging pinion pinion 22 can be reduced.
• FIG. 4 shows a further embodiment variant of the damping device proposed according to the invention.
• the stop ring 214 is mounted on the lateral surface 220 of the output shaft 1 16 by means of a ring which is made of elastomeric material or elastic properties aufwei- sendem material. This lives the stop ring 214 according to this
• the ring made of elastomeric material 230 is likewise embedded in a recess 210 or a groove-shaped recess on the lateral surface 220 of the output shaft 16.
• the receiving space 242 of the stop ring 214 is formed closed, so that the stop ring 214 is indeed fixed on the lateral surface 220 of the output shaft 214, but axial displacements are possible, although to a limited extent compared with the embodiment of FIG Approach direction 222 on the stop ring 214 approaching starter pinion 22 (see illustration of Figure 1) is attenuated in contact with the first end face 260 in its movement and reduces the noise.
• FIG. 5 shows a further embodiment variant of the damping device proposed according to the invention.
• the stop ring 214 also includes a closed receiving space 242.
• the stop ring 214 is fixed by means of a spring assembly 232 on the lateral surface 220 on the output shaft 1 16.
• the spring assembly 232 may include a number of disc springs or disc springs in the same direction or in opposite directions, so that the stop ring 214 in both axial directions relative to the lateral surface 220 of the output shaft 1 16 is movable.
• An energy reduction or an impulse reduction of the engaging spur gear 22, in particular of a starting pinion of the starting device 10 upon actuation of the engagement relay 16 can be achieved.
• the pulse of the engaging Andrehritzels 22 is discontinued by this possible embodiment of a damping device, so that the noise during engagement of the spur gear, in particular the Andrehritzels the starting device 10 is favorably influenced.
• FIG. 6 shows a further possible embodiment of the damping device proposed according to the invention.
• the stop ring 214 is also by means of a ring, in particular a snap ring 212, on the lateral surface 220 of
• the ring 212 is from a puncture 210 or a Groove in the lateral surface 220 of the output shaft 1 16 added.
• the stop ring 214-fixed stationary on the lateral surface 220 of the output shaft 116 in this embodiment -comprises the first end face 216, which lies opposite the starter pinion 22, and the second end face 218 facing away from the latter.
• the receiving space 242 is in the stop ring
• the first end face 216 of the stop ring 214 opposite is an end face 236 of the Andrehritzels 22 participatspurenden, in particular the
• a recess 238 is formed, in which at least one plate spring 234 is received.
• the plate spring 234 can also be accommodated in a correspondingly configured recess within the first end face 260 of the stationarily fixed stop ring 214.
• the starting pinion 22 comprises a helical toothing 143.
• a plurality of identically or oppositely oriented disk springs may be located in the recess 238 on the end face 236 of the driving sprocket 22 to be inserted.
• FIG. 7 a further variant of the damping device proposed according to the invention for a machine, in particular an electric starter device, is shown.
• At least one plastic disc 240 is located between the first end face 216 of the stop ring 214 and the end face 236 of the driving pinion 22 to be inserted.
• the end face 236 of the driving sprocket 22 to be inserted can also be arranged a package of a plurality of vulcanised plastic disks 240.
• the at least one plastic disk 240 as shown in Figure 7 is made of a material such as PA, elastomer, TPE thermoplastic or rubber. If a package of plastic discs 240 is used, then on the one hand the thickness and thus the damping capacity of the at least one plastic disc 240 can be adjusted in the axial direction.
• the plastic material from which the plastic disk 240 is made has a hardness between 10 to 70 Shore. Depending on the composition of the individual plastic discs 240 of a spring package, the damping properties can be adapted to the requirements.
• the stop ring 214 is fixed in relation to its axial position on the lateral surface 220 of the output shaft 1 16 stationary.
• the receiving space 242 of the stop ring 214 completely surrounds the ring 212, in particular designed as a snap ring, so that the axial position of the stop ring 214 remains fixed.
• the stop ring 214 has the first end face 216 and the second end face 218.
• the at least one plastic disc 240 shown there is inserted into the recess 238 on the end face 236 of the driving sprocket 22 to be inserted.
• the at least one plastic disc 240 without provision of a recess 238 in the end face 236 of the starting pinion 22, which has a favorable effect on the production costs.
• All embodiments of the damping device proposed according to the invention which are shown in connection with FIGS. 1 to 7, have in common that with this energy reduction and thus a considerable reduction in noise when engaging the driving sprocket 22 an electric starter device 10 can be achieved.
• a spring element therefore acts here as a damping element, because a spring element has an inner damping. This applies both to starting devices 10, in which a freely ejecting starter pinion is provided, as well as for starting devices, in which only a part of the Andrehrit- zuspurenden is exposed.
• the proposed solution according to the invention is readily applicable to starting devices 10, the shaft-hub connection 128 has a coarse thread and the starter pinion 22 has a spur toothing.

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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)

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Citations (7)

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• 2009
  • 2009-10-01 DE DE102009045248A patent/DE102009045248A1/de not_active Withdrawn
• 2010
  • 2010-10-01 WO PCT/EP2010/064671 patent/WO2011039357A1/de active Application Filing
  • 2010-10-01 EP EP10766000A patent/EP2483553A1/de not_active Withdrawn
  • 2010-10-01 IN IN931DEN2012 patent/IN2012DN00931A/en unknown
  • 2010-10-01 CN CN201080043848.2A patent/CN102549256B/zh not_active Expired - Fee Related

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